Analyzing Chemical Equations

What does a chemical equation use in order to model what happens in a chemical reaction?

• chemical structures

• chemical reactions

• chemical formulas

• chemical balances

Tags

NGSS.MS-PS1-5

What do we call the number placed in front of a chemical formula that indicates how many molecules of the substance are represented in the chemical equation?

• broefficient

• coefficient

• products

• reactants

What are the 3 main components of a chemical equation?

• reactants

• hot dogs

• yield arrow

• stop sign

• product(s)

Tags

NGSS.MS-PS1-5

The same number and type of (a)   should be present on both sides of a chemical equation.

Tags

NGSS.MS-PS1-5

Which chemical formula accurately represents the provided model?

pink-Na. green-Cl. yellow-S. blue-H

• H₂S + 2NaCl ---------->Na₂S + 2NaCl

• Na₂S + 2NaCl ---------> Na₂S + 2NaCl

• 2NaCl + H₂S -----------> Na₂S + 2NaCl

Tags

NGSS.MS-PS1-1

Which chemical equation accurately represents the provided model of a chemical change?

• 2H₂O₂ -----------> O₂ + 2H₂O

• O₂ + 2H₂O --------> 2H₂O₂

• 2H₂O -----------> 2H₂O

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

How many molecules of water were produced for this chemical equation?

(a)  

Tags

NGSS.MS-PS1-5

Subscripts indicate the # of atoms for each element in a chemical equation. How many total hydrogen atoms are there in the reactants

• 1

• 2

• 4

• 8

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

The (yield) arrow of a chemical equation will always point towards the ______________.

• reactants

• products

• coeffecients

• subscripts

Tags

NGSS.MS-PS1-5

Please check all answers that represent only chemical formulas.

• CH₄

• H₂O + C₃PO ----------> R₂D₂

• OH-

• C₆H₁₂O₆

• 4Br + 2CO₂ -----------> 6BrCO₂

Tags

NGSS.MS-PS1-1